Locking means for joints of stovepipes.



A. BLAHA.

LOCKING MEANS FOE/JOINTS 0F STOVEPIPES.

APPLICATION FILED NOV. 13, 1909.

968,506. Pa ented Aug. 23, 1910.

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mviTnn STATES PATENT OFFICE.

ANTON BLAHA, 0F PORTLAND, OREGON, ASSIGNOR OF ONE-HALF TO TOLLEF O.SANDS, OF PORTLAND, OREGON.

LOOKING MEANS FOR JOINTS OF STOVEPIPES.

Specification of Letters Patent.

Application filed November 13, 1909.

To all whom it may concern:

Be it'known that I, ANTON BLAHA, a citizen of the United States, and aresident of Portland, in the county of Multnomah and State of Oregon,have invented a new and useful Improvement in Looking Means for Jointsof Stovepipes, of which the following is a specification, referencebeing had to the accompanying drawings, constituting a part thereof.

My invention has for its main object to provide easily applied means forsecurely holding the joints of stove-pipes together and thus avoidingthe pulling of such pipe joints apart, as commonly occurs, and whichcondition not only prevents the proper draft through the pipes, but alsofills the room with smoke and soot, and is liable to cause a fire fromthe sparks emitted.

Another object of my invention is to provide a contrivance which ischeap to manufacture and at the same time strong and durable, and whichis adapted to be applied to any size pipe, and may be so applied withoutthe aid of a skilled mechanic.

To this end my invention comprises two collars, tied together, one foreach of the two pieces of the pipe, and overlapping ends provided withlocking means adapted to permit the collar to be made larger or smallerto fit the pipe-piece and be clamped thereon.

These and other features are more fully explained in the body of thespecification and illustrated in the drawings, in which:

Figure 1 shows my locking means applied for locking together an elbowjoint and pipe length, as in practice, the pipe pieces being shown indot-and-dash outline 5 Fig. 2 is a detail of the hinge-like joint bywhich two of the meeting ends of the collar members of my device areseparably fastened together, and also shows means provided fortightening the collar about the pipe joint, so as to clamp it in place;Fig. 3 is a cross section through the center of Fig. 2; Fig. 4 shows anextended or straightenedout detail of the strap afiixed in loop form toone of the members of the collars of my device, and which strapconstitutes one of the knuckles of the hinge-fastening for the twomeeting ends of the collar; this view also shows means, operating on theeccentric or cam principle, by which such hinged strap is shortened andlengthened, and in so doing the collar is clamped in place and released;Fig. 5 illustrates means for adjustably uniting the opposite two ends ofthe clamping bands of the collar of my device and by which the collarsare adapted to fit pipes of varying diameter; and Fig. 6 is a topedge-view of that portion of the collar provided with the hook membersof my device.

The pipe length a, and the pipe elbow I) (both shown in broken outlinein Fig. 1) are provided with overlapping joint portions 0, d, of theusual form of construction.

6, 6, represent two collars or bands united at the sides by tie-strapsf, g. Both collars are of identical construction. Each thereof comprisestwo parts 6, e united at one of their meeting ends by a hinge-like joint(the details of which are more clearly shown in Fig. 2) consisting ofknuckles h, h, formed on the collar member 6 and a knuckle it formed onthe strap end 7', a part of the member 6; and through the knuckles isinserted a hinge pin 2'. A detail of the strap end j of the member 6 isshown extended or straightened out in Fig. 4. It is reinforced on itsextremity with a centrally perforated disk j, adapted to be placed onthe cam Z, which is rotatably fastened on the collar member 6 by ariveted pin is, and the cam Z is provided with a wrench-head m.

In practice the strap j is bent in the form of a loop (as shown in thesectional view Fig. 3) thus providing the hinge knuckle h, and the cam Zwould be inserted through the perforated disk j of the extremity of thestrap j, and when so assembled the pin 7c is headed to permanently holdthe parts in place, as shown in Fig. 3.

The opposite ends of the members 6, e of the collars overlap each other,and are provided with means for adjustably fastening the same together;that is to say, the collar member 6 is provided with a longitudinal slot6 and the collar member 6 is provided with a series of hooks a, punchedout from the metal, as shown in Figs. 5 and 6. Thus the collar may beadapted to fit a stovepipe of any cross section by simply overlappingthe ends of the two members thereof and engaging the slotted end of themember 6 with the relatively located hook it of the member 6 When soadjusting the collar, the cam Z is turned to such position as to givethe strap j its greatest length; and after the collar has been fitted,by means of a wrench applied to the wrench head m, the cam Z is rotatedin the opposite direction, thus drawing up and tightening the strap 7',and causing the collar to be securely clamped in place.

As will be noted from Fig. 1, one of the collars e is fastened to onemember of the pipe oint, as for example the elbow, and the other collaris fastened to the pipe length. \Vhen so fastened, it will be impossiblefor the pipe joints to become separated until either one of the collarshas first been released by rotating the cam Z of the strap Theconstruction of my device is further so contrived as to facilitate itsconvenient and ready removal in case such be required for the cleaningout of the pipes, or repair thereof. In order to release my device it issutlicient to rotate the cam head so as to lengthen the strap j, andtherewith remove the tension of the knuckle member it on the hinge-pini, whereupon the latter may be withdrawn and the collar immediatelyremoved.

For convenience of application the hooks a may be located so as torepresent distances of half inches from each other, and correspondinglymarked.

I claim:

1. Locking means for the joints of a pipe comprising two collars andtie-straps connecting the same, each collar comprising two parts ormembers, hinged knuckles on the ends of one member, a pin in saidknuckles, a strap on the related end of the other member, such strapalso constituting a knuckle and being looped around the hinged pin,means adjustably securing the extremity of the strap end, the oppositeends of the two members of the collar overlapping, and beingrespectively provided with means by which they are adj ustably fastenedtogether.

2. Locking means for the joints of a pipe comprising two collars andtie-straps connecting the same, each collar comprising two parts ormembers, hinged knuckles on the ends of one member, a pin in saidknuckles, a strap on the related end of the other member, such strapalso constituting a knuckle and being looped around the hinged pin,means, operating on the cam principle, adjustably securing the extremityof the strap end, the opposite ends of the two members of the collaroverlapping, and being respectively provided with means by which theyare adjustably fastened together.

3. Locking means for the joints of a pipe comprising two collars andtie-straps connecting the same, each collar comprising two parts ormembers, hinged knuckles on the ends of one member, a pin in saidknuckles, a strap on the related end of the other member, such strapalso constituting a knuckle and being looped around the hinged pin, the

extremity of the strap end being provided with an annular aperture andthe body of this collar member with a rotatable cam disk insertedthrough such aperture, the opposite ends of the two members of thecollar overlapping, and being respectively provided with means by whichthey are adjustably fastened together.

4-. Locking means for the joints of a pipe comprising two collars andtie-straps connecting tie same, each collar comprising two parts ormembers, hinged knuckles on the ends of one member, a pin in saidknuckles, a strap on the related end of the other member, such strapalso constituting a knuckle and being looped around the hinged pin,means adjustably securing the extremity of the strap end, the extremityof the strap end being provided with an annular aperture and the body ofthis collar member with a rotatable cam disk inserted through suchaperture, and means on the cam disk facilitating the application theretoof and the rotation thereof by an instrument, the opposite ends of thetwo members of the collar overlapping, and being respectively providedwith means by which they are adjustably fastened together.

5. Locking means for the joints of a pipe comprising two collars andtie-straps connecting the same, each collar comprising two parts ormembers, hinged knuckles on the ends of one member, a pin in saidknuckles, a strap on the related end of the other member, such strapalso constituting a knuckle and being looped around the hinged pin,means adjustably securing the extremity of the strap end, the extremityof the strap end being provided with an annular aperture and the body ofthis collar member with a rotatable cam disk inserted through suchaperture, a wrench-head on the cam disk, the opposite ends of the twomembers of the collar overlapping, and being respectively provided withmeans by which they are adjustably fastened together.

6. Locking means for the joints of a pipe comprising two collars andtie-straps connecting the same, each collar comprising two parts ormembers, hinged knuckles on the ends of one member, a pin in saidknuckles, a strap on the related end of the other member, such strapalso constituting a knuckle and being looped around the hinged pin,means adjustably securing the extremity of the strap end, the oppositeends of the two members of the collar overlapping, and one of such endsbeing provided with a loop and the other with a series of hook-likeengaging means.

7 Locking means for the joints of a pipe comprising two collars andtie-straps connecting the same, each collar comprising two parts ormembers, hinged knuckles on the ends of one member, a pin in saidknuckles,

a strap on the related end of the other meml strap also constituting aknuckle and being ber, such strap also constituting a knuckle j loopedaround the hinged pin, the extremity and being looped around the hingedpin, '1 of the strap end belng provided with an anmeans, operating onthe cam principle adjustably securing the extremity of the strap end,the opposite ends of the two members of the collar overlapping, and oneof such ends being provided With a loop and the other with a series ofhook-like engaging means.

8. Locking means for the joints of a pipe comprising two collars andtie-straps connecting the same, each collar comprising two members,hinged knuckles on the ends of one member, a pin in said knuckles, astrap on the related end of the other member, such nular aperture andthe body of this collar member With a rotatable cam disk insertedthrough such aperture, and means on the cam disk facilitating theapplication thereto of and the rotation thereof by an instrument,

' the opposite ends of the tWo members of the collar overlapping, andone of such ends being provided With a loop and the other With a seriesof hook-like engaging means.

ANTON BLAHA. Witnesses:

CEcIL LONG, O. O. MARTIN.

